All depends on how aggressive you want to be.
14.5psi (map2) 400bhp ish
17psi (Map5) 420-430bhp ish
With a G5 ISO board you could get higher boost but start to risk Knock without Meth. Depends on Octane and environmental conditions too.
Car: 2010 Jaguar XFR (Stock - For now)
Gone but not forgotten: Highly Modified E90 335i LCI M Sport Manual (circa 480BHP/500lb ft)